My best guess is that it is an 82BZ. This Starrett Dial Bore Gage Set consists of. A body and actuating rod. This item comes with its original case. Please look at ALL the pictures.

REMEMBER, I STILL GUARANTEE YOUR SATISFACTION. 82 SERIES DIAL BORE GAGE SET WITH PROBES, DIAL, INDICATOR AND CASE" is in sale since Monday, November 06, 2017. This item is in the category "Business & Industrial\Manufacturing & Metalworking\Metalworking Tooling\Inspection & Measurement\Inspection Gauges".